hugolib: Improve error message in .Render
hugolib: Improve error message in .Render

mdhender/hugo,gohugoio/hugo,mdhender/hugo,anthonyfok/hugo,gohugoio/hugo,gohugoio/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,fedelibre/hugo,anthonyfok/hugo,anthonyfok/hugo,fedelibre/hugo,mdhender/hugo